Female subjects - not surgically sterile (hysterectomy, bilateral oophorectomy, or bilateral tubal ligation) for at least 6 months or at least 2 years postmenopausal - must agree to utilize one of the following forms of contraception, if sexually active with a male partner, from screening through completion of the study. Approved forms of contraception are abstinence, hormonal (oral, implant, transdermal, vaginal, or injection) in use at least 3 consecutive months prior to the first dose of study medication, double barrier (condom with spermicide; diaphragm with spermicide), intrauterine device (IUD), or vasectomized partner (6 months minimum since vasectomy).

Exclusion Criteria:

Actively alcohol or drug dependent as defined by DSM-IV-TR Criteria

Patient actively suicidal within last 12-months or with current suicidal ideation